EP 2716822 B1 20181003 - HYDRAULIC WORKING MACHINE
Title (en)
HYDRAULIC WORKING MACHINE
Title (de)
HYDRAULISCHE ARBEITSMASCHINE
Title (fr)
MACHINE DE CHANTIER HYDRAULIQUE
Publication
Application
Priority
- JP 2011117443 A 20110525
- JP 2012063370 W 20120524
Abstract (en)
[origin: US2014020375A1] A hydraulic working machine has an assist electric motor connected to an engine and a hydraulic pump. The emissions of air pollutants in the exhaust gas from the engine are minimized regardless of fluctuations in the load torque of the hydraulic pump. A specific revolution speed suitable for reducing the emissions of air pollutants is stored, and an engine is controlled using the specific revolution speed as a target revolution speed. The absorption torque of a hydraulic pump is subjected to high-pass filtering whereby a high-frequency component devoid of a trend component is obtained. Target assist torque is computed from the high-frequency component, and the assist electric motor is subjected to power running/generation control accordingly. A specific output torque range suitable for reducing the emissions of air pollutants is stored, and the target assist torque is corrected so that the trend component does not exceed the specific output torque range.
IPC 8 full level
B60K 6/46 (2007.10); B60K 17/28 (2006.01); B60W 10/06 (2006.01); B60W 10/08 (2006.01); B60W 20/00 (2016.01); B60W 30/188 (2012.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); F02D 31/00 (2006.01); F02D 41/14 (2006.01); F15B 11/00 (2006.01); F15B 21/14 (2006.01)
CPC (source: EP KR US)
B60K 6/46 (2013.01 - EP US); B60K 17/28 (2013.01 - EP US); B60W 10/06 (2013.01 - EP US); B60W 20/00 (2013.01 - EP US); B60W 20/11 (2016.01 - US); B60W 20/15 (2016.01 - US); B60W 20/16 (2016.01 - EP US); E02F 9/00 (2013.01 - KR); E02F 9/20 (2013.01 - US); E02F 9/2025 (2013.01 - US); E02F 9/2075 (2013.01 - EP US); E02F 9/2296 (2013.01 - EP US); F02D 31/001 (2013.01 - EP US); F02D 41/1406 (2013.01 - EP US); F15B 11/00 (2013.01 - KR); F15B 21/14 (2013.01 - EP US); B60W 10/08 (2013.01 - EP US); B60W 30/1888 (2013.01 - EP US); B60W 2300/17 (2013.01 - EP US); B60W 2710/0644 (2013.01 - EP US); B60Y 2200/412 (2013.01 - EP US); F02D 2250/18 (2013.01 - EP US); F02D 2250/36 (2013.01 - EP US); F02D 2250/38 (2013.01 - EP US); F15B 2211/20515 (2013.01 - EP US); F15B 2211/20523 (2013.01 - EP US); F15B 2211/20546 (2013.01 - EP US); F15B 2211/6316 (2013.01 - EP US); F15B 2211/633 (2013.01 - EP US); F15B 2211/88 (2013.01 - EP US); Y02T 10/62 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
US 2014020375 A1 20140123; US 9399856 B2 20160726; CN 103547744 A 20140129; CN 103547744 B 20160224; EP 2716822 A1 20140409; EP 2716822 A4 20150422; EP 2716822 B1 20181003; JP 2012246631 A 20121213; JP 5341134 B2 20131113; KR 101926893 B1 20181207; KR 20140039198 A 20140401; WO 2012161276 A1 20121129
DOCDB simple family (application)
US 201214110808 A 20120524; CN 201280024700 A 20120524; EP 12789808 A 20120524; JP 2011117443 A 20110525; JP 2012063370 W 20120524; KR 20137030758 A 20120524